#### Answer

$\color{blue}{s\approx 71.4 \text{ ft}}$

#### Work Step by Step

RECALL:
The length of the arc $(s)$ intercepted by the central angle $\theta$ in a circle of radius $r$ is given by the formula:
$s = r\theta$, where $\theta$ is in radian measure.
Convert the angle to radians by multiplying $\dfrac{\pi}{180^o}$ to the angle measure to obtain:
$330^o=330^0 \cdot \dfrac{\pi}{180^o}=\dfrac{11\pi}{6}$
Use the formula above to obtain:
$s=r\theta
\\s=12.4 \cdot \frac{11\pi}{6}
\\s=71.41887299
\\\color{blue}{s\approx 71.4 \text{ ft}}$